1. In addition to Pershing Square Capital Management, L.P., a Delaware limited partnership ("Pershing Square"), this Form 4 is being filed jointly by PS Management GP, LLC, a Delaware limited liability company ("PS Management"), and William A. Ackman, a citizen of the United States of America (collectively, the "Reporting Persons"), each of whom has the same business address as Pershing Square and may be deemed to have a pecuniary interest in securities reported on this Form 4 (the "Subject Securities").

3. Pershing Square, as the investment adviser to the Pershing Square Funds, may be deemed to be the beneficial owner of the Subject Securities for purposes of Rule 16a-1(a) under the Securities Exchange Act of 1934. As the general partner of Pershing Square, PS Management may be deemed to be the beneficial owner of the Subject Securities for purposes of Rule 16a-1(a). By virtue of Mr. Ackman's position as Chief Executive Officer of Pershing Square and managing member of PS Management, Mr. Ackman may be deemed to be the beneficial owner of the Subject Securities for purposes of Rule 16a-1(a). Each of the Reporting Persons disclaims any beneficial ownership of any of the Subject Securities, except to the extent of any pecuniary interest therein.

4. This Form 4 is being filed as a result of sales related to portfolio management. Common Stock was sold for the accounts of the Pershing Square Funds in open market transactions and in a block transaction to a broker.

5. The Reporting Persons disclaim being directors by deputization for purposes of Section 16 of the Securities Exchange Act of 1934.